[PATCH v5 2/2] serial: zynqmp: Fetch baudrate from dtb and update

[Tom Rini]

On Thu, May 25, 2023 at 09:32:59AM +0530, Venkatesh Yadav Abbarapu wrote:

> From: Algapally Santosh Sagar <santoshsagar.algapally at amd.com>
> 
> The baudrate configured in .config is taken by default by serial. If
> change of baudrate is required then the .config needs to changed and
> u-boot recompilation is required or the u-boot environment needs to be
> updated.
> 
> To avoid this, support is added to fetch the baudrate directly from the
> device tree file and update.
> The serial, prints the log with the configured baudrate in the dtb.
> The commit c4df0f6f315c ("arm: mvebu: Espressobin: Set default value for
> $fdtfile env variable") is taken as reference for changing the default
> environment variable.
> 
> The default environment stores the default baudrate value, When default
> baudrate and dtb baudrate are not same glitches are seen on the serial.
> So, the environment also needs to be updated with the dtb baudrate to
> avoid the glitches on the serial.
> 
> Signed-off-by: Algapally Santosh Sagar <santoshsagar.algapally at amd.com>
> Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu at amd.com>
> ---
>  doc/README.serial_dt_baud      | 41 +++++++++++++++++++++++++++++++++

Sorry I missed this until v5.  This needs to be in rST and under doc/
somewhere (and make htmldocs happy).

-- 
Tom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 659 bytes
Desc: not available
URL: <https://lists.denx.de/pipermail/u-boot/attachments/20230607/7d9223a5/attachment.sig>